Cool, let me know how it runs.
I was only going to pick it up if you gave up on it. The idea is too good to let it just die, though I'd rather have you be the one to complete and release it seeing as it was your idea.
Oh OK, so I tested it in the server how it is currently and nothing happens, I mean the command does not run and gives no errors.
Edit: I think I know what the problem is...
in places such as...
function Spawnzomb( Pos, Ang, pl, pl.zomb )
and
function ulx.zombify( calling_ply, target_plys, pl.zomb )
pl.zomb should probably just be "zomb". I am gonna try that and hopefully get some thing from it.